Permanent waving device



March 28, 1939.

W. H. BROWN PERMANENT WAVING DEVICE Filed Feb. 24, 1937 I Ill INVENTOR.

III/III!!! ATTORNEY.

Patented Mar. 28, 1939 UNlTED STATES PATET OFFICE PERMANENT WAVING DEVICE Application February 24, 1937, Serial No. 127,476

2 Claims.

This invention relates to permanent waving and has particular reference to electrolytic heating of wound curls.

The principal object of the invention is to prevent corrosion between the permanent contact element carried by the clip which supplies current for heating the curl and to accomplish this by placing a temporary or removable and renewable contact in such relation as to seal off the vapors from the permanent contact.

Other objects are the provision of a peculiarly eifective form of renewable contact element and a simple and effective means for mounting and removing the same.

Other and more limited objects will be in part apparent and in part pointed out in connection with the accompanying drawing wherein Fig. 1 is an elevation of a permanent waving assembly including protective clamp, curler rod, electrolytic pad and clip; Fig. 2 is a transverse section taken through the assembly of Fig. 1; Fig. 3 is a fragmentary central section of the clip alone looking from the center; Fig. 4 is a section corresponding substantially to either of the lines 4-4 of Fig. 3; Fig. 5 is a section on the line 55 of Fig. 3 and Fig. 6 is an exploded view showing the parts in the same section as in Fig. 5.

Referring now to the drawing, the numeral it] indicates a protector clamp which may be of conventional construction such as used in the art of Croquignole waving. Carried by suitable cradle elements H on the protector clamp II) is a curler rod l2 also of conventional construction- Surrounding the curler rod, as best seen in Fig. 2, is a wound strand of hair l3 and surrounding the hair i3 is the electrolytic pad indicated generally by the numeral M. This pad consists of a liquid sustaining sheet l5 which may be composed of cotton flannel or similar fabric and to the outer surface of which are secured electrodes l6 which may be composed of sheet metal, preferably metal foil. The joint between the electrodes it may be covered by an element I! which may be of wax paper or the like to prevent excessive evaporation at that point.

Attached in gripping relation to the wound curl and electrolytic pad is a clip which in the present instance is a two-part sectional clip having jaws l8 secured together by a spring connector I9 adapted to urge them toward each other. Each of the jaws l8 has formed therein a depression which is extended at the ends into openings 2i extending completely through the jaws. These openings are provided with shoulders or ledges 22 upon which are seated sealing gaskets 23 in surrounding relation to the openings 2|. Between the openings 2i is a permanent contact element 24 which is received in a slight extension of the depression 20 so that it may be said to be embedded in the jaw element l8 at the bottom of the depression 20. Preferably the thickness of the element 24 and the depth of the depression receiving the same are so related that the element 24 projects very slightly above the adjacent surface of the jaw element. It is to be understood, of course, that the jaw element is composed of electrically non-conductive material which preferably also has good heat insulating properties. The element 24 extends beyond the depression 20 at both sides, as is clearly brought out in Fig. 2, and this serves to anchor the same in position. Conductors 25 are connected to the element 24 and extend from the clip to a suitable source of current.

Extending through the element 24 and preferably embedded in the jaw element l8 in such manner as not to depend entirely on the element 24 for support is a stud 26 which projects outwardly beyond the depression 20. Received in the depression 2i] is a removable and renewable contact element 2'! which is provided with embossed projections 28 having end faces adapted to engage and conform to a curl and adapted to extend through sealing gaskets 23 and through the openings 2| whereby to contact the electrode 1 elements I S. The element 21 is provided with an opening 29 adapted to receive the stud 26. The element 2i is preferably constructed of very thin sheet metal which may be stamped to the proper shape and which preferably is either of fairly good non-corrosive properties or plated with a metal of such properties. This element may be of thin copper or tin plate. The element 21 is held in position by means of a holding element 36 having an opening 3| adapted to be received on the stud 26 and projections 32 adapted to be received in the concavities of the embossed projections 28. A suitable nut 33 having an electrically non-conductive exterior covering is received on the stud 26 in threaded relation and holds the elements assembled as indicated in Fig. 5.

From the foregoing it will be obvious that the problem of corrosion in electrolytic heating of wound curls in permanent waving is met by the periodic discarding of an inexpensive element and that the device is well adapted for its intended purpose. While I have shown and described the present preferred embodiment, I wish it understood that the invention may be realized in different structures and that I am limited only in accordance with the appended claims.

Having thus described my invention, what I claim is:

1, In a clip for electrolytic heating of wound curls in permanent waving, an electrode contact carrying element having a depression formed in one face thereof and an opening extending from the bottom of said depression through said element, a permanent contact in said depression, a removable electrode contact received in said depression and having a projection extending through said opening, sealing means surrounding said projection for prevention of passage of vapors through said opening and a retaining element overlying said electrode and substantially closing said depression.

2. In a clip for electrolytic heating of wound curls in permanent waving, an electrode contact carrying element adapted to engage a curl and having an opening extending therethrough, a permanent contact seciu'ed to said element, a sheet metal removable contact having an em bossed portion extending through said opening and adapted to engage a curl, means for holding said removable contact in engagement with said permanent contact and means providing a seal for preventing liquid from passing from said embossed portion along said removable contact to said permanent contact.

WILLIAM H. BROWN- 

